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Example code of sitefinitysteve/php-diff-text

Informations about the package php-diff-text

php-diff-text

PHP library to generate HTML diff output with multiple diff strategies. Zero external dependencies.

This is a PHP variant of vue-diff-text, a Vue 3 plugin for displaying text and HTML differences. Same diff strategies, same HTML output, same CSS classes — just in PHP.

Author: Steve McNiven-Scott

Installation

That's it — Composer's autoloader handles the rest. No service providers, no config files.

Usage

Each diff class takes old and new text and returns HTML with .diff-added and .diff-removed spans.

Quick start (any PHP project)

Or use the individual classes directly:

Laravel Blade example

In your controller:

In your Blade template:

Tip: Copy vendor/sitefinitysteve/php-diff-text/css/style.css into public/vendor/php-diff-text/style.css, or add it to your Vite/Mix pipeline.

Output:

Available Diff Classes

Class Description
DiffChars Character-level diff
DiffWords Word-level diff (ignores whitespace)
DiffWordsWithSpace Word-level diff (whitespace-aware)
DiffLines Line-level diff
DiffSentences Sentence-level diff
DiffHtml HTML-aware diff with optional similarity threshold

All methods are static — no instantiation needed.

DiffText Facade

The DiffText class is the recommended entry point:

Options

All text diff classes accept an options array:

HTML Diff with Similarity Threshold

DiffHtml supports a similarity threshold (0-1). When the texts are less similar than the threshold, it renders a "full replacement" instead of a granular diff:

Similarity Utility

Compute text similarity directly:

Styling

Include the bundled CSS for default diff styling:

Or copy it into your asset pipeline. Customize with CSS variables:

Testing

Publishing to Packagist

First-time setup

  1. Create a GitHub repository:

  2. Register on Packagist:

    • Log in with your GitHub account
    • Click "Submit" and enter the GitHub repo URL
    • Packagist will auto-detect the composer.json
  3. Set up auto-updating (recommended):
    • On Packagist, go to your package settings and grab the API token
    • On GitHub, go to repo Settings > Webhooks > Add webhook
    • Payload URL: https://packagist.org/api/github?username=sitefinitysteve
    • Content type: application/json
    • Secret: your Packagist API token
    • Events: "Just the push event"

Releasing a new version

Tag a release and push:

Or use GitHub Releases:

Packagist picks up the new tag automatically via the webhook.

GitHub Actions (optional auto-test on release)

Create .github/workflows/tests.yml:

License

MIT

Made with ❤️ by sitefinitysteve

All versions of php-diff-text with dependencies

PHP Build Version
Package Version
Requires php Version >=8.1
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